University of California

Evaluation of concentrate and dilute ground air-carrier and aircraft spray coverage


W. W. Kilgore
W. E. Yates
J. M. Ogawa

Authors Affiliations

W. W. Kilgore was Lecturer, Department of Food Science and Technology, and Assistant Biochemist in the Agricultural Toxicology and Residue Research Laboratory, Davis; W. E. Yates was Associate Professor of Agricultural Engineering and Associate Agricultural Engineer in the Experiment Station, Davis; J. M. Ogawa was Associate Professor of Plant Pathology and Associate Plant Pathologist in the Experiment Station, Davis.

Publication Information

Hilgardia 35(19):527-536. DOI:10.3733/hilg.v35n19p527. October 1964.

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The fungicide captan was applied to almond trees for the control of Coryneum blight (Coryneum beijerinckii Oud.) and Hendersonia leaf blight (Hendersonia rubi Sacc). Applications were made by ground air-carrier sprayers (low- and high-volume gallonages), by helicopter, and by fixed-wing aircraft. The extent of disease control was determined for each method of application and compared to captan deposits on leaves and on glass microscope slides placed in the trees at various levels.

Literature Cited

California Spray-Chemical Corporation. Residue method RM-1. The analysis of residues of captan and phalton 1960.

Ogawa J. M., Wilson E. E., English Harley. The leaf blight disease of almond and its control. Hilgardia. 1959. 28:239-54. DOI: 10.3733/hilg.v28n09p239 [CrossRef]

Ogawa J. M., Yates W. E. Effect of volume and variation in droplet size of spray applications from an air-carrier sprayer on control of three almond diseases. Plant Disease Reptr. 1962. 46:614-15.

O’Reilly H. J. Relative efficiency of airplane and ground application of sprays in controlling almond shot-hole disease. Phytopathology. 1957. 47:530

Kilgore W, Yates W, Ogawa J. 1964. Evaluation of concentrate and dilute ground air-carrier and aircraft spray coverage. Hilgardia 35(19):527-536. DOI:10.3733/hilg.v35n19p527
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